^ This video talks about mitochondrial disease and toward the end they talk about a technique that can be used to prevent it. If you study animal cloning you realize one of the steps is identical. Therefore the UK make have unwittingly legalized a form of human cloning.
What the mitochondrial disease prevention therapy does is first fertilizes eggs externally with IVF. They then take a cell with a complete nucleus and put it the cell into an egg of another person replacing the egg's prior nucleus. Technically that is creating an embryo and then cloning the embryo with the SCNT method.
It's interesting because many places have banned human cloning when it is more obvious, but here they are cloning a very tiny human, and then likely discarding the old one.